Ethanol production using corn, switchgrass, and wood; Biodiesel production using soybean and sunflower

David Pimentel, Tadeusz Patzek

Research output: Contribution to journalArticlepeer-review

972 Scopus citations

Abstract

Energy outputs from ethanol produced using corn, switchgrass, and wood biomass were each less than the respective fossil energy inputs. The same was true for producing biodiesel using soybeans and sunflower, however, the energy cost for producing soybean biodiesel was only slightly negative compared with ethanol production. Findings in terms of energy outputs compared with the energy inputs were: • Ethanol production using corn grain required 29% more fossil energy than the ethanol fuel produced. • Ethanol production using switchgrass required 50% more fossil energy than the ethanol fuel produced. • Ethanol production using wood biomass required 57% more fossil energy than the ethanol fuel produced. • Biodiesel production using soybean required 27% more fossil energy than the biodiesel fuel produced (Note, the energy yield from soy oil per hectare is far lower than the ethanol yield from corn). • Biodiesel production using sunflower required 118% more fossil energy than the biodiesel fuel produced.

Original languageEnglish (US)
Pages (from-to)65-76
Number of pages12
JournalNatural Resources Research
Volume14
Issue number1
DOIs
StatePublished - Mar 1 2005

Keywords

  • Biodiesel
  • Biomass
  • Energy
  • Ethanol
  • Fuel
  • Natural resources

ASJC Scopus subject areas

  • Environmental Science(all)

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